保护气成分对<strong>1000 MPa</strong>级高强熔敷金属组织特征的影响

保护气成分对1000 MPa级高强熔敷金属组织特征的影响

安同邦,魏金山,单际国,田志凌

Influence of Shielding Gas Composition on Microstructure Characteristics of 1000 MPa Grade Deposited Metals

Tongbang AN,Jinshan WEI,Jiguo SHAN,Zhiling TIAN

表4 夹杂物化学成分EDS分析

Table 4 EDS analyses of chemical compositions of inclusions in deposited metals with different shielding gases(mass fraction / %)

Shielding gas	Position	O	Al	Si	S	Ti	Mn
95%Ar+5%CO₂	Center	16.53	12.82	3.14	2.11	44.04	21.32
95%Ar+5%CO₂	Verge	18.25	8.42	8.83	4.06	30.75	29.66
90%Ar+10%CO₂	Center	17.83	9.08	7.93	1.13	34.68	29.32
90%Ar+10%CO₂	Verge	18.51	6.01	11.64	4.52	20.18	39.11
80%Ar+20%CO₂	Center	20.36	8.58	2.89	1.21	45.63	20.32
80%Ar+20%CO₂	Verge	15.17	6.04	15.56	4.21	17.38	41.63
70%Ar+30%CO₂	Center	14.39	3.94	6.31	1.02	38.06	36.25
70%Ar+30%CO₂	Verge	14.86	2.66	15.68	4.18	17.63	44.98